Portola Hills Weather Forecast

    • 57
    • 84

    Mostly Sunny

    • 52
    • 72

    Partly Sunny

    • 50
    • 69

    Partly Sunny

    • 51
    • 67

    Mostly Sunny

    • 52
    • 73

    Mostly Sunny

    • 53
    • 73

    Mostly Sunny

    • 53
    • 74

    Mostly Sunny

Today 11 May Orange County Inland

Partly cloudy this morning. Becoming sunny. Highs 73 to 76 towards the coast to 79 to 83 farther inland. Areas of Winds west to 10 Mph.

Tonight 11 May Orange County Inland

Partly cloudy. Patchy fog overnight. Lows 55 to 59. Areas of Winds southwest to 10 Mph this evening becoming light.

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Portola Hills Temperature Statistics

May Temperature

Corona Airport (13 miles)

  • Lowest 6 May, 2026

    44.1 °F

  • Average May

    64 °F

  • Highest 9 May, 2026

    84 °F

Climate (2021–Present)

Corona Airport (13 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    78.3 °F
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